An LC resonant circuit contains a 400pF capacitor and a 100μH inductor. It is set into oscillation coupled to an antenna. The wavelength of the radiated electromagnetic waves is
A
377.14 mm
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B
377.14 m
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C
377.14 cm
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D
3.7714 cm
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Solution
The correct option is B 377.14 m
We know that frequency of the LC oscillations is given by
ν=12π√LC=12π√100×10−6×400×10−12=14π×10−7Now to calculate the wavelength λ=cν(wherec=speedoflight)=3×1081×4π×10−7=377m